Presidium Multi Tester III (PMuT III) All-in-One Instrument for Testing Diamonds, Moissanites and Diamond Simulants

Excelente

The Diamond Tester falls short in several key areas, making it a less reliable choice for those needing accurate gemstone assessments. Its performance is inconsistent, often failing to distinguish between diamonds and simulants effectively. This can lead to confusion and potential errors, especially when assessing valuable or delicate stones. The build quality is also lacking, with a flimsy design that feels less durable than expected. Frequent calibration issues can result in unreliable readings, requiring constant adjustments to maintain accuracy. The user interface is not as intuitive as one would hope, making the testing process more cumbersome than necessary. Additionally, the display is small and hard to read, which can be frustrating during detailed examinations. The overall functionality does not justify the investment, particularly when compared to other more reliable and accurate testers on the market. Customer support is reportedly slow to respond, which is a drawback if issues arise. For those serious about gemstone testing, it’s worth considering alternatives that offer better reliability and accuracy. Overall, the Diamond Tester fails to deliver on its promises, making it a less advisable choice for enthusiasts and professionals alike.

Initially I thought this multi tester was unreliable. Turns out I was the weak link. After reading other reviews and watching the product videos, I realized I wasn’t putting adequate pressure on the stone. After being mindful of the stone cleanliness, probe angle, and pressure, I’m identifying stones with precision. This is a prograde device which does require practice and patience. I’m extremely happy with the purchase.

This review is based on using it for a day. I will probably get better at it when I start using it more often. I use it to test loose stones and also jewelry. It work well, but you can get false readings especially on small stones. It also it difficult to use on stone cuts where there it not much of the flat area. It works well for identifying glass and diamond. I will probably buy another tester that can be used for identifying other stones like Garnet, Topaz, etc.

Husband wanted me to buy this to keep kin my purse for the "haters" he got me a big diamond ring lol . Works very well everytime def worth the price, not some crappy one u can get.

Accurate BUT doesn’t last long - at this price point, I should’ve gotten years out of this tool. However, in less than a year of use, the “ready” light just blinks and it never officially turns on. Very disappointing for the $220+ price point. When it did work, it was great. It was easy to use and very easy to carry around with you. I just fully expected it to last longer.

The tester arrived today and worked well just out of the box ( after installing batteries). It is easy to operate and quickly verified five known diamonds and one known topaz as a non-diamond. You do need to make sure that the tested surfaces are clean which was simple to do by simply wiping the surface of the stone being tested with the supplied cloth. From a "cold" start, it took just a few seconds for the tester to indicate that it was ready to test. There was no waiting period required as I went from stone to stone. I'm quite happy with the unit.

Tested on the metal that came with it, it would either say diamond or moissanite. Attached a video

El producyo aparenta muy buena calidad, pero no es lo que promete. Tengo casos en los que un diamante HPHT es leido como diamante cuando esta sobre la placa de aluminio suministrada y una vez montado en oro lo lee como Moissanita. Casos en los que pequeños diamantes naturales los lee como Moissanitas. Y casos en los que a las Moissanitas las lee como diamantes.. Aun limpiando, aun cambiando pilas, aun verificando angulo de toma, aun con todo lo que se recomienda hacer, lls errores de lectura son persistentes, por lo que no es confiable su uso. para eso, vale mas comprar un diamond selector de 150 pesos (conductividad termica) y un Moissanita terster de 150 pesos (conductividad electrica) y con menos del 10% de lo que vale este producto tienes los mismos o incluso mejores resultados de lectura, ya que con esos aparatos baratos si temgo lecturas persistentes de lo que se trata.

I received without a cover tip and used, the packaging is damage and worn out.

Works well and easy to use.

Works as advertised. Also checks the crystals on my watches, showing if they are mineral glass or sapphire. Great little gadget to have.

It's a little expensive but it's doze the job well.